Trouble Code Definition

WARNING: This page is about a different car, the 1995 Chevrolet Caprice. However, it is still accessible from the selected car via links, so may be relevant.

TROUBLE CODE DEFINITION

Code No.

Circuit Affected

CODE 11

Malfunction Indicator Light

CODE 12⁽¹⁾

No RPM Reference Pulse

CODE 13

Left Heated Oxygen Sensor Circuit Open

CODE 14

Coolant Tempperature Sensor Signal Vltge Low (High Temperature Indicated)

CODE 15

Coolant Temp Sensor Signal Voltage Low

CODE 16

Opti-Spark Ignition System Low Resolution Pulse

CODE 18

Injector Circuit

CODE 21

Throttle Position Sensor Signal Voltage High

CODE 22

Throttle Position Sensor Signal Voltage Low

CODE 23

IAT Sensor Signal Voltage High (Low Temp Indicated)

CODE 24

Vehicle Speed Sensor

CODE 25

IAT Sensor Signal Voltage Low (High Temp Indicated)

CODE 26

Canister Purge Solenoid

CODE 27

EGR Sol Valve

CODE 28

Trans. Range Pressure Switch

CODE 29

Secondary Air Injection

CODE 32

EGR System Error

CODE 33

MAP Sensor Signal Voltage High

CODE 34

MAP Sensor Signal Voltage Low

CODE 36

Opti-Spark High Resolution Pulse

CODE 37

TCC Brake Switch Error

CODE 38

Brake Switch Error

CODE 41

Opti-Spark Ignition System Open Or Shorted Est Ckt

CODE 42

IC Circuit Grounded

CODE 43

Knock Sensor Circuit (Dual Sensors)

CODE 44

Left Heated Oxygen Sensor Lean Exhaust Indication

CODE 45

Left Heated Oxygen Sensor Rich Exhaust Indication

CODE 46

Pass-Key Circuit

CODE 47

Knock Sensor Module

CODE 48

MASS Airflow Sensor

CODE 50

System Voltage Low

CODE 52

Faulty CAL-PAK

CODE 53

System Voltage High

CODE 55

PCM Error

CODE 55

Fuel Lean Monitor

CODE 58

Trans Temperature Sensor High Temperature

CODE 59

Trans. Temperature Sensor Low Temperature

CODE 63

Right Heated Oxygen Sensor Circuit Open

CODE 64

Right Heated Oxygen Sensor Lean Exhaust Indication

CODE 65

Right Heated Oxygen Sensor Rich Exhaust Indication

CODE 66

A/C Pressure Sensor

CODE 67

A/C Pressure Sensor

CODE 68

A/C Relay Circuit Shorted

CODE 69

A/C Compressor Relay

CODE 70

A/C Compressor Relay Driver

CODE 72

Vehicle Speed Sensor Loss

CODE 73

Pressure Control Solenoid

CODE 75

Transmission Voltage Low

CODE 77

Primary Cooling Fan Driver

CODE 78

Secondary Cooling Fan Driver

CODE 79

Transmission Fluid Overtemp

CODE 81

2-3 Shift Solenoid

CODE 82

1-2 Shift Solenoid

CODE 83

TCC PWM Solenoid - A/T

CODE 84

3-2 Control Solenoid - With A/T

CODE 85

TCC Stuck On

CODE 90

TCC Solenoid Circuit

CODE 95

Change Oil Light

CODE 96

Low Oil Light

CODE 97

VSS Output Circuit

⁽¹⁾	Display of a Code 12 is normal when reference pulses are not being received by control module (engine not running).

TROUBLE CODE CONVERSION

New Code No.	Old Code No.	Circuit
P0101	34	MAF Sensor
P0112	23	Air Temperature Sensor
P0113	25	Air Temperature Sensor
P0116	New	Coolant Sensor Range
P0117	15	Coolant Temperature Sensor
P0118	14	Coolant Temperature Sensor
P0122	22	Throttle Position Sensor
P0123	21	Throttle Position Sensor
P0125	New	Coolant Temperature Sensor
P0131	44	Oxygen Sensor
P0132	45	Oxygen Sensor
P0133	New	Oxygen Sensor
P0134	13	Oxygen Sensor
P0135	New	Oxygen Sensor Heater
P0137	New	(Catalyst) Oxygen Sensor
P0138	New	(Catalyst) Oxygen Sensor
P0140	New	(Catalyst) Oxygen Sensor
P0151	44	Oxygen Sensor
P0152	45	Oxygen Sensor
P0153	New	Oxygen Sensor
P0154	13	Oxygen Sensor
P0155	New	Oxygen Sensor Heater
P0158	45	Oxygen Sensor
P0160	13	Oxygen Sensor
P0161	New	Oxygen Sensor Heater
P0171	New	Fuel Lean
P0172	New	Fuel Rich
P0174	New	Fuel Lean
P0175	New	Fuel Rich
P0300	New	Misfire
P0321	17	Spark Reference
P0325	43	Knock Sensor
P0341	18	Cam Signal
P0342	41	Cam Signal
P0401	53/54/55	EGR
P0420	New	Catalyst System
P0501/0502	24	Vehicle Speed Sensor
P0703	38	TCC Brake Switch
P0705	31	Trans. Range Switch
P0712	59	Trans. Fluid Temp. Sensor
P0713	58	Trans. Fluid Temp. Sensor
P0740	39	TCC
P0755	36	Shift Solenoid "B"
P1114	New	Coolant Sensor
P1115	New	Coolant Sensor
P1133	New	Oxygen Sensor
P1153	New	Oxygen Sensor
P1158	New	Oxygen Sensor
P1200	New	Injector Circuit
P1257	57	Supercharger Boost
P1350/1361	42	Ignition
P1403/1404/1405	75/76/77	EGR Solenoid(s)
P1406	32	EGR
P1520	New	Park/Neutral
P1530	69	A/C Pressure Sensor/Switch
P1531	66	A/C Charge Low
P1550	New	Cruise
P1558	63	Cruise
P1561	61	Cruise
P1562	62	Cruise
P1565	65	Cruise
P1567	67	Cruise
P1568	68	Cruise
P1571	New	Traction Control
P1573	New	Traction Control
P1599	99	Cruise
P1619	New	Oil Life Reset
P1623	51	PROM Error
P1626/1629	58	Pass-Key
P1630	16	Voltage High/Low
P1640	26/56	Quad-Driver
P1650	26/56	Quad-Driver
P1670	26/56	Quad-Driver
P1860	New	TCC PWM Solenoid